Berth-lamp.



W. J. BOHAN.

BERTH LAMP.

APPLICATION FILED JUNE 15, 1911.

Patented May 7, 1912.

In eflqr wild)? J UNITED. STATES PATENT OFFICE. 1

Specification of Letters I'atent. Application file-ct June 15, 1911. Serial No. 633,890.

Patented May 7, 1912.

To all whom it may concern:

Be it known that I, WILLIAM J. BOH-AN, a citizen of the United States, and resident of St. Paul, county of Ramsey, and State of Minnesota, have invented certain new and useful Improvements in Berth-Lamps, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to electric lamps adapted to be housed within a recess in a wall, and particularly serviceable in sleeping car berths. Its objects are to simplify devices of this character in their general arrangement, and to provide a resilient support for an electric lamp within the easing, a further object being to improve upon the lamp socket in such manner as to admit of the insertion and removal of an incandescent electric lamp in a casing having a chamber of restricted size.

These objects are attained by means of the structure as hereinafter described, and as illustrated in the,accompanying drawings, in which- Figure 1 is a front elevation of the lamp; Fig. 2 is a vertical central sectional view showing the lamp fitted within a wall recess; and Fi 3 is a sectionalview on the line 3-3 of %ig. 1.

' A portion of a wall, such as the wall of a car, is represented at 10, 10, and is shown as being apertured or recessed to receive the lamp and permit the front thereof to be substantially flush with the wall surface.

The casing of the lamp comprises a boxshaped body portion 11, preferably of metal, within which an incandescent electric lamp is housed. To this body portion there is applied a face plate 12, which is secured in place by means of screws, as 13, which preferably enter the wall 10. The plate 12 is apertured to permit the emission of light, there being a lens 14 applied to such aperture and held in place by any suitable means. As shown, a metallic ring 15 is applied to the back face of the lens, and is seated against shoulders 16, 16, on the body 11, the lens being held firmly to this ring by the pressure of the plate 12 adjacent its edges.

The plate 12 extends upwardly beyond the body 11, and is apertured in such extension to receive a switch box 17, which fits into the wall 10 and is secured in place by means of screws 18 passing through its face plate and into the plate 12. The switch employed is of any desired type, there being shown a common 'form of switch box having two push buttons 19, 20.

The incandescent lamp 21 is held within a socket, which differs from the ordinary lamp socket in common use only in that it is longitudinally divided into the two sections 22, 23, the former of which is rigid with the baseplate 24, the latter being detachably secured to its mate. Any suitable means may be employed for securing the t-wo'sections together. As shown, this is accomplished by means of screw bolts 25, 26, setting through lateral lugs on the two sections.

A resilient support is provided for the lamp in order that lamps having fragile filaments may be employed. As the preferred means for accomplishing this result the base plate 24 is shown as carried by pins 27, 28, (as many being employed as may be found necessary) depending from the top wall of the body 11 of the casing and passing loosely through apertures in the plate 24. Spiral springs 29, 30, are coiled about the lower portions of the pins27, 28, and

support the plate 24. Spiral springs 31, 32,

are coiled about the upper ends of these pins and react between the plate 24 and the top of the casing 11. Any other suitable spring arrangement may be substituted for that shown and described. The service wires 33, 34, lead to binding posts 35, 36, of the switch box 17 andfrom this box current is led to apd from the lamp socket by means of wires 3 38.

The lampcasing need not be of greater length than the lamp, its socket and supporting pins, except as is necessary to prevent actual contact of the bulb with the walls of the casing. The bulb is inserted and removed by first opening the socket, and it is securely clamped within the socket by the means employed for binding the two sections of the socket together.

I claim as my invention- 1. In a lamp, in combination, a casing adapted to fit within a wall recess, an incandescent electric lamp housed within the casing. the transverse dimension of the lamp being but slightly less than that of the casing, a vertically movable socket plate for carrying the lamp, springs supporting the socket plate, and guides for the socket plate combined length of the ing, a socket plate for carrying the lamp, a

plurality of guide pins depending from-the top of the casing, projecting loosely through the socket plate and having their lower ends headed, springs interposed bet-ween the socket plate and the heads ofthe pins, and springs interposed between the socket plate and the top of the casing.

3. In a lamp, in combination, a casing, a longitudinally separable lamp socket secured in the upper part of the casing, and

an incandescent lamp carried by the socket, the length of the lamp being greater than the distance from the lower end of the socket to the bottom of the casing.

4. In a lamp, in combination, a casing; a

support in the casing; a lamp socket longitudinally divided, one section of the socketbeing permanently attached to the support and the other" section. thereof being removably connected with the permanently attached section; and a lamp carried by the socket, the length of the lamp being greater than the distance from the outer end of the socket to the remoter end of the casing.

- WILLIAM J. BOHAN.

Witnesses:

E. M. Boesen, C. H. ROCHE. 

